1 Season
40 Episode
Voltes V - Season 1 Episode 8 A Conspiracy in the Underground Fortress (Chiteijou no Inbou- 地底城の陰謀)
Duke Zaki came from Boazan to visit Prince Heinell. He harassed Heinell of his failure so far to conquer the Earth and also of his background of being a son of the traitor named La Gour. The Duke then made a plan to kill Heinell in a fight with Voltes by forcing Heinell to pilot the beast fighter Gargo. But Zaki's plan was shattered to pieces as Kazarin eavesdropped the plan and leaked it to Prince Heinell.
- Country : Japan
- Genre : Animation, Drama
- Director : Saburo Yatsude
- Cast : Kazuyuki Sogabe, Seizô Katô, Noriko Ohara, Hiroshi Masuoka, Miyuki Ueda, Osamu Ichikawa